from django.db import models
from django.db.models.query import QuerySet
from django.utils import timezone
from django.contrib.auth.models import User
from django.urls import reverse
from taggit.managers import TaggableManager

class publishedManager(models.Manager):
    def get_queryset(self) -> QuerySet:
        return super(publishedManager,self).get_queryset().filter(status='published')

class Post(models.Model):
    objects = models.Manager()
    published = publishedManager()
    tags = TaggableManager()
    
    STATUS_CHOICES = (
      ('draft', 'Draft'),
      ('published', 'Published')
    )
    title = models.CharField(max_length=250)
    body = models.TextField()
    slug = models.SlugField(max_length=250, unique_for_date='publish')
    author = models.ForeignKey(User, on_delete=models.CASCADE,related_name='author')
    publish = models.DateTimeField(default=timezone.now)
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)
    status = models.CharField(max_length=10, choices=STATUS_CHOICES,default='draft')

    class Meta:
     ordering = ('-publish',)
 
    def __str__(self):
     return self.title

    def get_absolute_url(self):
      return reverse('blog:post_detail',args=[self.publish.year,self.publish.month,self.publish.day,self.slug])

# Create your models here.
class Comment(models.Model):
   post = models.ForeignKey(Post,on_delete=models.CASCADE,related_name='comments')
   name = models.CharField(max_length=80)
   email = models.EmailField()
   body = models.TextField()
   created = models.DateTimeField(auto_now_add=True)
   updated = models.DateTimeField(auto_now=True)
   active = models.BooleanField(default=True)
   class Meta:
      ordering = ('created',)
   def __str__(self):
      return f'Comment by {self.name} on {self.post}'
